By Bonsteel, Jay Allan. . Genre Soils / United States . Names soil / type / areas / organic matter / area and 152 more

By Ruthven, Alexander Grant, 1882-1971 . Genre Garter snakes / Animals / Variation . Names mexico / radix / elegans / thamnophis / arizona and 1799 more

By Ruthven, Alexander Grant, 1882-1971 . Genre Garter snakes / Animals / Variation . Names mexico / thamnophis / arizona / megalops / type and 1553 more

By Pierce, Newton Barris, 1856-1916 . Genre Peach leaf-curl . Names fruit / sulphur / leaves / california / mycelium and 1241 more

Genre Beneficial insects / Insect pests . Names aphis / bacteria / sp / miscellaneous / life and 10436 more

By Wiley, Harvey Washington. . Genre Dairying . Names order / animal / op / beaker / called and 454 more

By Evermann, Barton Warren, 1853-1932 / Jenkins, Oliver Peebles, 1850- / Juday, Chancey, 1871-1944 . Genre Rivers / California / Fishes / California / Fishes and 1 more . Names fish / golden / s b / spotted / salmo and 547 more

By Pierce, W. Dwight (William Dwight), 1881-1967 . Genre Beneficial insects / Insect pests . Names insects / lepidoptera / fruit / adult / india and 10926 more

By Hills, Thomas Lawrence, 1890- [from old catalog] . Genre Nitrates. [from old catalog] / Bacteria, Nitrifying. [from old catalog] . Names bacteria / soil / azotobacter / bacillus / none and 599 more

By O'Donnell, Ignatius D. [from old catalog] . Genre n-us--- / Agriculture / United States / Irrigation / United States. [from old catalog] . Names soil / wheat / horse / roots / plants and 1011 more